Improved lubricating-oil



JOSEPH M. LIPPINOOTT, OF PITTSBURG, PENNSYLVANIA.

IMPROVED LUBRlCATlNG-OIL.

Specification forming part of Letters Patent No. 57,737, dated September 4, 1866.

To all whom it may concern:

Be it known that I, JOSEPH M. LIPPINCOTT, of the city of Pittsburg, in the county of Allegheny, in the State of Pennsylvania, have made a new and useful discovery in the mode of reducing the gravity of hydrocarbons or petroleum, as Well as in the manufacture of lubricating-oil of any gravity, in combining or using my discovery with hydrocarbons or petroleum, or with animal oils, tallow, or fatty matter of any description; and [do hereby declare that the following is a full description of my said discovery.

The nature of my discovery consists in reducing hydrocarbons or petroleum to any gravity desired by the use or introduction therein of pine-tar in quantities necessary for such reduction. The pine-tar is soluble at a low temperature, but I find that by subjecting it to a certain temperature or degree of heat a hydrocarbon of heavy gravity can be obtained much sooner and with less labor than without the application of heat.

Oils of light gravity can be reduced to a low gravity by the use of pine-tar at a much less cost than by the use of animal oils, and herein consists the value of my discovery in the manufacture of lubricating-oils.

I therefore claim as follows, to Wit:

1. The reduction of the gravity of hydrocarbons or petroleum-oil by the admixture of pine-tar, substantially as above set forth.

2. The use of pine-tar in the manufacture of lubricating-oils of any desired gravity, in combination with hydrocarbons or petroleum.

3. The use of pine-tar in the manufacture of lubricating-oils, in combination with hydrocarbons or petroleum, animal oiis, tallow, or fatty matter of any description.

JOS. M. LIPPINCOTT.

Witnesses:

SAML. L. SOUTHARD, ALGERNON S. BELL. 

